May one bake Challahs for Shabbos at the same time he is baking meat or chicken?[1]

Covered: If the meat or chicken is covered, it is allowed to bake the Challah simultaneously if the oven is clean of any meat or chicken residue. If the bread is covered it may be done in all cases. In both of the above cases, the bread remains Pareve [although in the former case, only if the oven was not Ben Yomo, as explained next].

Uncovered: If the meat and bread are both uncovered, it is forbidden to bake the Challah together with the meat unless 1) one will not eat the bread with dairy [as the bread becomes meaty], and 2) is only baking enough to last that Shabbos, or is forming the Challahs in a special shape that reminds him of its meat status, so he does not come to eat it with dairy. If one transgressed and baked them together without fulfilling the above conditions, then by today’s ovens, seemingly the bread is forbidden just as if it were kneaded with meat.[2] One is to thus contact a Rav.]

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[1] See “A Semicha Aid for the Laws of Basar Bechalav” Chapter 97

[2] See Shach 108:11 or “A Semicha Aid for Learning the Laws of Taaruvos” chapter 108 Halacha 2I and 3A; Chochmas Adam 62:6; Kreisy 108:12; Kaf Hachaim 108:33; Igros Moshe 1:40; See Darkei Halacha p. 242; Mahrsham 3:208; Minchas Yitzchak 5:20; Kinyan Torah 1:24

Opinions that are lenient: See Peri Chadash 108:10 who argues on the entire ruling of the Shach ibid which prohibits the bread; See the following Poskim who are lenient in certain cases even if the bread was actually kneaded with milk or meat: Kreisy Upleisy 97:1 in name of his grandfather; Daas Eish 12 and Chamudei Daniel brought in Darkei Teshuvah 97:21Hakashrus 10 footnote 33 in name of Rav Moshe Halbershtam; Kreisy Upleisy 97:1 in name of his grandfather.